US3966060A - Lifting apparatus - Google Patents

Lifting apparatus Download PDF

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Publication number
US3966060A
US3966060A US05/394,528 US39452873A US3966060A US 3966060 A US3966060 A US 3966060A US 39452873 A US39452873 A US 39452873A US 3966060 A US3966060 A US 3966060A
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US
United States
Prior art keywords
arm
lid
engagement means
bar
drive shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/394,528
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English (en)
Inventor
John Frederick Collett Andrews
Roy Victor Beton
Kenneth David Leavens
Gordon John Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coal Industry Patents Ltd
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Coal Industry Patents Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of US3966060A publication Critical patent/US3966060A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B25/00—Doors or closures for coke ovens
    • C10B25/20—Lids or closures for charging holes

Definitions

  • This invention relates to lifting apparatus for removing and replacing an object in a fixed location.
  • the invention is designed to have particular, although not exclusive application, to the removal of a lid from the top of a coke oven in order that the over may be charged and then to replace the lid after the charging.
  • Machines have been devised which enable these lids to be lifted mechanically and these machines comprise an electro-magnet which attracts a steel plate on the top of the lid.
  • the magnet is positioned over the lid and then energised to cause the lid to move on to the magnet.
  • the magnet is then lifted with the lid and the lid is deposited on the top of the oven.
  • the hopper to charge the oven can then be moved into position and the charge fed into the oven. Following this the hopper is removed and the lid lifted up again by re-energising the magnet and the lid and magnet are positioned over the coke oven aperture and the lid replaced by deenergising the magnet.
  • This machinery has substantial disadvantages. It is very expensive to construct and winding and insulation failures occur since the magnet is subjected to heat from the coke ovens as well as heat generated within the windings. As the lid is removed from the coke oven for a relatively long period the escape of noxious fumes occurs for a long period since it is necessary to deposit the lid so as to conserve energy by having the electro magnet constantly energised and also since time is consumed in moving the hopper into the charging position and out of the charging position. The size of the magnet is such that it cannot conveniently be located in between the hopper and the lid.
  • the engaging means preferably includes a pair of prongs for engaging in apertures in the object.
  • the engaging means may also include a member adapted to hook on to the object or to projections thereon.
  • a further rotating means may be provided which is adapted to oscillate the object in the lowered position of the arm and this oscillation may be through a small arc or a large arc.
  • the arm is preferably connected to a keyed or splined drive shaft and can be raised and lowered with the shaft by a fluid operated cylinder and if necessary a linkage mechanism attached to the drive shaft.
  • a further fluid operated cylinder may be connected to the arm or to the drive shaft thereof to rotate the arm.
  • the fluid operated clyinders may be pneumatically operated or, in certain applications, may be hydraulically operated.
  • FIGS. 1 and 2 of the accompanying drawings In order that the invention may be readily understood one example of lifting apparatus for removing and replacing the lid of a coke oven during charging of the oven will now be described with reference to FIGS. 1 and 2 of the accompanying drawings.
  • FIGS. 1 and 2 of the accompanying drawings In the figures,
  • FIG. 1 is a side view
  • FIG. 2 a top plan view of the apparatus.
  • a horizontal coke oven 1 is shown having two feed apertures 2 and 3 in the top surface (FIG. 2). There are in fact four or more apertures for charging along the oven but only two are shown in the drawings.
  • the ovens are charged by a sequential charger which travels over a battery of ovens and is arranged to feed predetermined amounts of coal into the ovens in a sequence by removing the lids of the ovens and then feeding coal from hoppers positioned above the ovens.
  • the whole operation is controlled by an operator situated in an air conditioned cab on the charger and effecting control through an automatic push button sequential controller.
  • the apertures 2, 3 have lids 4, 5 respectively and one of the hoppers 6 can be seen in FIG. 1 positioned above the lid 4 and aperture 2.
  • the outlet from the hopper 6 is controlled by outlet gates 7.
  • the mouth of the hopper 6 is positioned a distance H above the top of the oven 1.
  • the lid lifting apparatus comprises a frame 10 which supports a vertical and rotatable shaft 11 which carries at its lower end a cantilevered arm 12 which is securely fixed to the bottom of the shaft 11.
  • the arm 12 carries at its free end a bar 13 which comprises engaging means and has two downwardly depending prongs 14.
  • a further bar 15 extends across the end of the arm 12 and carries two downwardly projecting hooks 16.
  • a vertically mounted pneumatically operated pressure regulated cylinder 17 having a piston rod 18 which is pivotally connected to a cross lever 19 fitted with an adjustable counterbalance weight mounted on the frame 10.
  • the other end of this lever 19 is connected to a pivotal point 20 at the top of the shaft 11.
  • the shaft 11 is provided with a key 21 and is vertically mounted to slide in a bearing collar 22.
  • This shaft has a crank arm 23 connected to it and to the end of a piston rod 24 of a cylinder 25.
  • the cylinder 25 is connected to the frame 10.
  • the engaging means 13 has a link arm 26 connected through one end of a centrally mounted lever 27 to a pneumatic oscillating cylinder 28 which provides the oscillation of engaging bar 13.
  • the other end of lever 27 is connected to a spring return device 29 attached to the arm 12 to ensure correct positioning of prongs 14.
  • the hopper 6 In operation the hopper 6 is charged with a required quantity of coal to be coked and is positioned by an operator over the aperture 2 of the coking oven 1.
  • the arm 12 is positioned as shown in FIG. 2 with the prongs 14 engaging in apertures in the lid 4.
  • a stop pin with a rotatable collar rests on the centre of the lid and correctly positions the height of arm so that the prongs may engage effectively.
  • the oscillating cylinder is then operated to move the rod 26 towards the lid 4 and to cause the bar 13 of the engaging means to pivot through a small arc about the end of the arm 12. This in turn causes the prongs 14 to pivot lid 2 until the hooks 16 on bar 15 engage under bars (not shown) secured to the top of the lid 2.
  • the cylinder 17 is now operated to move the piston 18 downwards and this causes the lever 19 to pivot and to raise the pivotal point 20 where it is connected to the shaft 11. As a consequence shaft 11 rises lifting the arm 12 a distance which is less than the height H.
  • the key 21 slides in the bearing 22.
  • the cylinder 25 is now operated to draw in the piston 24 causing the crank 23 to rotate the shaft 11 and the arm 12.
  • the arm 12 thus moves from a position with its centre line on the line 30 to a position with its centre line on the line 31.
  • pneumatic cylinders gives the advantage that there is no fire risk from leaking hydraulic oil coming into contact with hot surfaces.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)
US05/394,528 1972-09-15 1973-09-05 Lifting apparatus Expired - Lifetime US3966060A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4289072A GB1439332A (en) 1972-09-15 1972-09-15 Lifting apparatus
UK42890/72 1972-09-15

Publications (1)

Publication Number Publication Date
US3966060A true US3966060A (en) 1976-06-29

Family

ID=10426416

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/394,528 Expired - Lifetime US3966060A (en) 1972-09-15 1973-09-05 Lifting apparatus

Country Status (9)

Country Link
US (1) US3966060A (US06589383-20030708-C00041.png)
JP (1) JPS4964605A (US06589383-20030708-C00041.png)
AU (1) AU476652B2 (US06589383-20030708-C00041.png)
BE (1) BE804828A (US06589383-20030708-C00041.png)
CA (1) CA1001982A (US06589383-20030708-C00041.png)
DE (1) DE2344206A1 (US06589383-20030708-C00041.png)
FR (1) FR2200189B1 (US06589383-20030708-C00041.png)
GB (1) GB1439332A (US06589383-20030708-C00041.png)
ZA (1) ZA735885B (US06589383-20030708-C00041.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463857A (en) * 1979-10-02 1984-08-07 Bbc Brown, Boveri & Company, Limited Lifting and swivelling device
US5139619A (en) * 1991-03-11 1992-08-18 Atlantic Richfield Company Cover lifting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007097A (en) * 1959-07-02 1961-10-31 Us Industries Inc Automatic handling and assembly servosystem
US3142391A (en) * 1961-07-17 1964-07-28 Allied Chem Coke oven charging machine having mechanism for removing and replacing charging hole covers
US3731822A (en) * 1970-12-24 1973-05-08 Hartman M W Manuf Co Inc Foundry mold jacket and weight shifter
US3753502A (en) * 1971-06-25 1973-08-21 Still Fa Carl Device for automatically turning, lifting off and replacing covers on the charging shafts of coking ovens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399706A (fr) * 1964-04-09 1965-05-21 Houilleres Bassin Du Nord Dispositif d'enlèvement, de remise en place et d'application étanche sur leur siège, de tampons de fermeture de cellules de fours à coke
JPS518963B1 (US06589383-20030708-C00041.png) * 1971-04-22 1976-03-23

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007097A (en) * 1959-07-02 1961-10-31 Us Industries Inc Automatic handling and assembly servosystem
US3142391A (en) * 1961-07-17 1964-07-28 Allied Chem Coke oven charging machine having mechanism for removing and replacing charging hole covers
US3731822A (en) * 1970-12-24 1973-05-08 Hartman M W Manuf Co Inc Foundry mold jacket and weight shifter
US3753502A (en) * 1971-06-25 1973-08-21 Still Fa Carl Device for automatically turning, lifting off and replacing covers on the charging shafts of coking ovens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463857A (en) * 1979-10-02 1984-08-07 Bbc Brown, Boveri & Company, Limited Lifting and swivelling device
US5139619A (en) * 1991-03-11 1992-08-18 Atlantic Richfield Company Cover lifting device

Also Published As

Publication number Publication date
GB1439332A (en) 1976-06-16
ZA735885B (en) 1974-08-28
AU5986873A (en) 1975-03-06
JPS4964605A (US06589383-20030708-C00041.png) 1974-06-22
DE2344206A1 (de) 1974-03-28
BE804828A (fr) 1974-03-13
FR2200189B1 (US06589383-20030708-C00041.png) 1977-05-20
CA1001982A (en) 1976-12-21
FR2200189A1 (US06589383-20030708-C00041.png) 1974-04-19
AU476652B2 (en) 1976-09-30

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